[fauigerzigerk]

This isn't quite the same thing as trying to scale like Google though. Low latency is very important for usability regardless of how many users you serve. How easy it is to achieve depends more on the geographical distribution of your users than on their number.

If my app has a handful of users that are split between the US and Europe or Asia, and the app is 90% reads, then the distributed DB approach of fly.io or Cloudflare makes a lot of sense. It also adds considerable complexity though, so it's obviously a tradeoff.